John A. Hart
- Medicare services, 2024
- 2,215
- Medicare patients, 2024
- 690
- Hospital affiliations
- 5
- Industry payments
- $7,065
- Medical group
- 1
- Practice address
- 5841 S Maryland Ave, Chicago, IL 60637
- Practice phone
- Call (773) 702-1530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The University of Chicago Medical Center
Chicago, Illinois
Find John Hart's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John A. Hart is a pathologist in Chicago, Illinois
John Hart practices at The University of Chicago Medical Center in Chicago, Illinois.
John Hart's NPI, 1750433439, was assigned on January 16, 2007. John Hart holds Illinois license 036082583.
- NPI
- 1750433439NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779558069
- NPI enumeration date
- January 16, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John A. Hart practices at The University of Chicago Medical Center in Chicago, Illinois
John Hart's primary practice is The University of Chicago Medical Center, at 5841 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- The University of Chicago Medical Center5841 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John A. Hart is affiliated with 6 sites of care and 1 medical group
John Hart's primary practice is The University of Chicago Medical Center in Chicago, Illinois. John Hart is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI also links John Hart to 4 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John A. Hart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Hart practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The University of Chicago Medical Center | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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John A. Hart is one of 63 pathologists in Illinois
Anatomic pathology is John Hart's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. John Hart is licensed in Illinois.
Specialties and state licenses
- Anatomic pathology, IllinoisPrimary
Pathologists near John Hart
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John A. Hart billed Medicare for 2,215 services in 2024
CMS data shows 2,215 Medicare services from John Hart across 10 procedure codes in 2024, for 690 Medicare patients. Medicare paid $73,573 for them. Every service was in a facility, such as a hospital, rather than an office.
John Hart's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,3142024: 2,2154%
John Hart compared with the Illinois median for pathologists, 2024
- John Hart
- Illinois median
- Medicare services
- 2,215vs 1,0302.2 times
- Medicare patients
- 690vs 40770% above
Medians across 55 pathologists in Illinois with Dmand AI profiles that report each measure.
John Hart's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for John Hart?
Medicare shows one payer. Book a meeting to get commercial claims data for John Hart and other pathologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
John A. Hart treated 690 Medicare patients in 2024, average age 70
CMS counts 690 Medicare patients who saw John Hart in 2024. The largest group is 65 to 74, with 373 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.06, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts John Hart's median patient age at 56, with 56% women.
John Hart's Medicare patients by age, 2024
John Hart's Medicare patients by sex, 2024
- Women35451%
- Men33649%
Chronic conditions among John Hart's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Arthritis45%
- Diabetes39%
- Cancer32%
- Chronic kidney disease32%
- Ischemic heart disease30%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
John Hart's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How John A. Hart takes part in Medicare
John Hart accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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John A. Hart received $7,065 in industry payments from 2017 to 2022
CMS Open Payments shows 10 general payments to John Hart from 3 drug and device companies from 2017 to 2022. Consulting fees make up the largest share, 84% of the total. Alexion Pharmaceuticals, Inc. paid the most, $4,081.
General payments to John Hart by program year, 2017 to 2022
General payments to John Hart by kind, 2017 to 2022
- Consulting fees$5,90584%
- Travel and lodging$83812%
- Food and beverage$3225%
Companies that paid John Hart the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John A. Hart's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John A. Hart
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John A. Hart's NPI number?
John A. Hart's NPI number is 1750433439. It was assigned on January 16, 2007, and it is active in the NPI Registry.
What does John A. Hart specialize in?
John A. Hart is a pathologist in Chicago, Illinois. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does John A. Hart practice?
John Hart practices at 5841 S Maryland Ave, Chicago, IL 60637. John Hart's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dmand AI also links John Hart to 4 hospitals.
What is John A. Hart's office phone number?
The practice phone on file for John Hart is (773) 702-1530.
What is John A. Hart's medical license number?
John Hart holds Illinois license 036082583.
Which hospitals is John A. Hart affiliated with?
John Hart is affiliated with University of Chicago Medical Center. Dmand AI links John Hart to 4 more hospitals.
What medical group is John A. Hart part of?
John Hart is linked to UChicago Medicine Physicians (University of Chicago Physicians Group).
Does John A. Hart accept Medicare?
Yes. CMS data shows John Hart billed Medicare for 2,215 services in 2024, and John Hart accepts Medicare assignment.
How many Medicare patients does John A. Hart see?
CMS counts 690 Medicare patients who saw John Hart in 2024, with an average age of 70.
What services does John A. Hart bill to Medicare?
In 2024, John Hart's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88313) and lab and pathology test (88307).
Has John A. Hart received payments from drug or device companies?
CMS Open Payments shows $7,065 in general payments to John Hart from 3 companies from 2017 to 2022. The largest total came from Alexion Pharmaceuticals, Inc.
How long has John A. Hart been practicing?
John Hart graduated from medical school in 1986, 40 years ago.
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